Sponge handle



FIG. 1 is a front perspective view showing my design for a sponge handle;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a left side view thereof, the right side being a mirror image thereof.

The broken lines in the drawings depict portions of the sponge handle that form no part of the claimed design. 

CLAIM The ornamental design for a sponge handle, as shown and described. 